| Sumario: | FD3, a computer program for estimating fractal dimensions that may indicate the presence of chaos, is introduced. The program was written in C computer language and will run on virtually any computer that has a C compiler. It has been run on IBM compatibles, Macintosh, Sun workstations, and Next workstations. FD3 was used to determine the fractal dimension of the Bender-Gestalt, which is a test requiring the subject to draw nine figures selected from a larger set employed in perceptual experiments by Wertheimer. The values for capacity, information, and correlation dimension for the nine drawings are provided.
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